1. SEMINAR REPORT ON “GAS INSULATED TRANSFORMER” www.fakengineer.com

2. SF6 GAS INSULATED TRANSFORMER EMPLOYS SF6 GAS INSTEAD OF THE CONVENTIONAL OIL BOTH AS AN INSULATING AND COOLING AGENT.

3. CONTENTS  SF6---AN OVERVIEW  APPLICATIONS OF A GAS INSULATED TRANSFORMER  FEATURES OF A GAS INSULATED TRANSFORMER  LAYOUT  COOLING APPARATUS OF A GAS INSULATED TRANSFORMER  IMPORTANT ACCESSORIES  CONCLUSION

4. SF6 – AN OVERVIEW  SF6 is Sulphur hexafluoride formed by chemical reaction of molten sulphur and fluorine.  It is colourless, odourless, nonflammable, non- corrosive and chemically stable.  High dielectric strength.  Quenches arc effectively and has excellent cooling properties.  Good thermal conductivity and excellent thermal stability.  It’s not poisonous and eco-friendly.

5. APPLICATIONS OF SF6 GAS INSULATED TRANSFORMER HHospitals, underground shopping centers, substations where a high level of fire safety is required. WWater treatment plants and hydroelectric power plants where waterways must be kept unpolluted. TThermal power plants, chemical plants, public works facilities etc where high reliability is required.

6. FEATURES OF A GAS INSULATED TRANSFORMER  Highly flame resistant and non explosive.  High resistance to moisture.  Reduced installation space.  High reliability.  Causes no pollution.  Explosion proof tank.  Easy inspection and maintenance work.

7. LAYOUT OF A GAS INSULATED TRANSFORMER

8. THE ACTUAL LAYOUT

9. COOLING APPATARTUS EEmploys a cooling medium in liquid phase such as a Refrigerant R113 otherwise known as Trifluorotrichloroethane or C 2 F 3 Cl 3. SSF6 gas is obviously used as the second cooling medium.

10. IMPORTANT ACCESSORIES DIAL THERMOMETER PRESSURE GAUGE TEMPERATURE COMPENSATING PRESSURE SWITCH

11. CONCLUSION Incessant research and continuous developments have made construction of large capacity gas insulated transformer possible. With the eco-friendly aspects of SF6 gas and considering the huge advantages of the gas, long strides can be made in this regard to further utilize it and increase the efficiency of the transformer and making the power system more reliable and safer.

12. Thank you for a very patient hearing.